Feeds

McAfee slaps Trojan warning on MS Office Live

Friendly fire from update

High performance access to file storage

McAfee has apologised after an anti-virus update released on Monday night incorrectly identified a plug-in for Microsoft Office Live Meeting as a Trojan.

The signature update file mistakingly flagged LMCAPI.exe (a component of Live Update) as a Trojan called Swizzor. As a result the component was incorrectly deleted from thousands of desktops at one huge multinational, staffers from which informed us of the problem but requested anonymity. Techies at the firm had to roll out new versions of Live Update as well as an updated signature file that avoids the false alert.

In a statement, McAfee said the snafu affected only a "small percentage" of its enterprise customers.

The issue was rapidly identified and corrected in the signature release on Tuesday 5th August, with any customer contacting McAfee prior to the release of the corrected signature being given an additional DAT file that suppressed this incorrect identification.

McAfee Avert Labs aims to maintain a high-level of proactiveness and accuracy in its generic detection signatures and to minimise false positives, while making any required corrections as rapidly as possible. McAfee would like to apologise to any customers affected by this issue.

Faulty anti-virus signature updates are a generic problem faced by all security vendors from time to time. Previous examples have included a Kaspersky update quarantining Windows Explorer, AVG crying wolf at Adobe Reader and, more recently, both CA and McAfee decided that legitimate JavaScript apps were malign.

These are three examples of a problem we've written about many times in the past and for which no ready solution is apparent. Effects vary by environment and miss-diagnosed application but can run to anything from the automatic deletion of a component no-one misses to locked-up workstations in the worst cases, which are mercifully rare. ®

High performance access to file storage

More from The Register

next story
Parent gabfest Mumsnet hit by SSL bug: My heart bleeds, grins hacker
Natter-board tells middle-class Britain to purée its passwords
Obama allows NSA to exploit 0-days: report
If the spooks say they need it, they get it
Web data BLEEDOUT: Users to feel the pain as Heartbleed bug revealed
Vendors and ISPs have work to do updating firmware - if it's possible to fix this
OpenSSL Heartbleed: Bloody nose for open-source bleeding hearts
Bloke behind the cockup says not enough people are helping crucial crypto project
One year on: diplomatic fail as Chinese APT gangs get back to work
Mandiant says past 12 months shows Beijing won't call off its hackers
Call of Duty 'fragged using OpenSSL's Heartbleed exploit'
So it begins ... or maybe not, says one analyst
German space centre endures cyber attack
Chinese code retrieved but NSA hack not ruled out
NSA denies it knew about and USED Heartbleed encryption flaw for TWO YEARS
Agency forgets it exists to protect communications, not just spy on them
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
HP ArcSight ESM solution helps Finansbank
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mobile application security study
Download this report to see the alarming realities regarding the sheer number of applications vulnerable to attack, as well as the most common and easily addressable vulnerability errors.